substances having more quantity of oxygen when heated liberate oxygen mercuric oxide potassium nitrate potassium permanganate

Potassium permanganate when heated, decomposes to form potassium manganate, manganese dioxide and oxygen..

Preparation of Oxygen - From Potassium Permanganate - Potassium permanganate when heated, decomposes to form potassium manganate, manganese dioxide and oxygen..

The common name of potassium nitrate is Bengal salt petre or nitre. It can be prepared by treating the oxide, hydroxide, carbonate or hydrogen carbonate salts of potassium with nitric acid. It is a colorless crystalline solid, soluble in water. When hea..

Preparation of Oxygen - From Potassium Chlorate - When Potassium chlorate is heated strongly it decomposes to give oxygen. But if a catalyst like manganese dioxide is mixed with it, oxygen is liberated at much lower temperature, ..

Discovery of Oxygen - Two scientists, Carl Scheele of Sweden and Joseph Priestly of England working independently, discovered oxygen. They published their discovery in 1777. Scheele obtained oxygen by heating potassium nitrate and mer..

Two scientists, Carl Scheele of Sweden and Joseph Priestly of England working independently, discovered oxygen. They published their discovery in 1777. Scheele obtained oxygen by heating potassium nitrate and mercuric oxide..

The reaction is immediate and one can observe bubbles of oxygen gas liberated in the flask. As more and more hydrogen peroxide is added more oxygen is formed. The oxygen produced is collected in an inverted glass cylinder by the downward displacement of water..

Preparation of Oxygen - From Nitrates - Metallic nitrates, when heated, give out oxygen. At the same time, most of them also give out a reddish brown gas - nitrogen dioxide, NO 2 . Thus, these nitrates cannot be used to prepare h..

Laboratory Preparation of Oxygen - Any of the above mentioned methods could be used to prepare oxygen in the laboratory. Mercuric and silver oxides are not used for the preparation of oxygen, as they are very expensive. For the laboratory preparatio..

The common name of sodium nitrate is "Chile salt Petre". It is found in large quantity in Chile in South America. It can be prepared by treating the oxide, hydroxide, carbonate or hydrogen carbonate salts of sodium with nitric acid. It is a colorless crystalline solid..